How do seesaws go up and down?: a book about simple machines
Have you ever wondered how seesaws go up and down or how screws stay secure in walls? Beginning concepts of mechanical engineering, including levers, wedges, inclined planes, and more, are explored in this newest engaging addition to the How Do series. The How Do series is a great introduction to va...
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| Format: | EAUDIO |
| Language: | ENGLISH |
| Published: |
Dreamscape Media, LLC
2021
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| Series: | How Do? |
| Subjects: |